<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
        <el-row :gutter="20">
            <!-- 占8份 -->
            <el-col :span="8">
                <el-input placeholder="请输入内容" v-model="queryInfo.query"
                clearable @clear="getGoodsList()">
                    <el-button slot="append" icon="el-icon-search"
                    @click="getGoodsList()"></el-button>
                </el-input>
            </el-col>
            <el-col :span="12">
                <el-button type="primary" @click="goAddPage()">添加商品</el-button>
            </el-col>
        </el-row>
        <el-table
            :data="goodslist"
            stripe
            border
            style="width: 100%">
            <el-table-column
            type="index">
            </el-table-column>
            <el-table-column
            prop="goods_name"
            label="商品名称"
            >
            </el-table-column>
            <el-table-column
            prop="goods_price"
            label="商品价格(元)"
            width="95">
            </el-table-column>
            <el-table-column
            prop="goods_weight"
            label="商品重量"
            width="95">
            </el-table-column>
            <el-table-column
            label="创建时间"
            width="95">
                <template slot-scope="scope">
                    <!-- 使用过滤器 -->
                    {{ scope.row.add_time | dateFormat }}
                </template>
            </el-table-column>
            <el-table-column
            label="操作"
            width="130">
                <template slot-scope="scope">
                    <el-button type="primary" icon="el-icon-edit" size="mini"></el-button>
                    <el-button type="danger" icon="el-icon-delete" 
                    size="mini" @click="removeById(scope.row.goods_id)"></el-button>
                </template>
            </el-table-column>
        </el-table>
    </el-card>
    <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[10, 20, 30]"
      :page-size="queryInfo.pagesize"
      layout="total, sizes, prev, pager, next, jumper"
      :total="total">
    </el-pagination>
  </div>
</template>

<script>
export default {
    name: 'ListPage',
    data(){
        return{
            // 获取商品列表参数对象
            queryInfo:{
                query: '',
                pagenum: 1,
                pagesize: 10
            },
            // 接受商品列表
            goodslist: [],
            // 总条数,用于分页
            total: 20
        }
    },
    created(){
        this.getGoodsList()
    },
    methods: {
        // 获取商品列表
        async getGoodsList(){
            const{data:res} = await this.$http.get(`goods`,
            {params:
                this.queryInfo
            })
            if(res.meta.status !== 200){
                return this.$message.error('获取商品失败')
            }
            this.$message.success('获取商品成功')
            console.log(res.data)
            this.goodslist = res.data.goods
            this.total = res.data.total
        },
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize
            this.getGoodsList()
        },
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage
            this.getGoodsList()
        },
        async removeById(id){
          const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
          }).catch((err) => {err})

          if(confirmResult !== 'confirm'){
            this.$message.info('已取消删除')
          }else{
            const {data:res} = await this.$http.delete(`goods/${id}`)
            if(res.meta.status !== 200){
                this.$message.error('error!删除错误')
            }
            this.$message.success('删除成功')
            this.getGoodsList()
          }
        },
        // 前往添加商品页面
        goAddPage(){
            this.$router.push('/goods/add')    
        }
    }
}
</script>

<style>

</style>